Removable ventilating hood construction



Feb. 24, 1959 R. ISRYNE '2 2,874,628

REMOVABLE VENTILATING HooD.coNsTRUcTIoN Filed May 9, 1955 52 im flumix.,

4free/veg@ United States t fasCe REMovABLE VENTILATING noon t 1coNsrRUcrroN 3 Claims. (Cl. 98-115) u 'I'hepresent invention relatesgenerally to Ventilating hoods which are mounted over stoves and thelike in order to gather fumes and vapors and direct them to aVentilating duct, and more particularlyto such hoods that are detachablymounted upon portions of the building structure from which the hoods maybe detached for easy cleaning.

Many different types of hoods and similar members are widely known foruse in connection with Ventilating ducts. These hoods are commonlylocated over stoves, steam tables or similar equipment. Typically, theyare provided with an opening in a top wall or in a side wall whichregisters with anopening in a Ventilating duct. Fumes orf vapors risingunderneath the hood are ex'- haustedY from the roomby passing throughthis opening into the duct-'which conductsthem to the atmosphere. A fanmay be located in the Ventilatingv duct or at the inletlthereto in orderto force air through the duct. In order `to maintain therequiredrregistration between the opening'in the wall of the hood andthe opening of the Ventilating duct, hoods of-this character havegenerally been permanently mounted in position.

The inside surfaces of hoods over'stoves and other cooking equipmentaccumulate *dirt and grease after they have been in use for awhile, so`that they require cleaning from time to time. Cleaning is `often* anawkward, if not a difcult job, becauseof the Alocation of the hood Aover a-stove, which makes it impractical `to put a ladder underneath thestove, and also the difficulty of working on the insidej surface of thehood. Cleaning is greatly simplified if the entire hood can be removedfrom its normal y-position and -taken to another location Where it maybe.jcle'aned easily. There is also eliminated need for cleaning up anydirt or material falling oi the hood.

For this reason, it is a general object of my invention to removablymount a Ventilating hood so that it can be easily removed from itsnormal operating'position to render the interior or undersurface ofthejhood more easily accessible for cleaning or other maintenance,

; -It is another object of my invention to provide a ventilating hoodconstruction! which can be mounted upon portions of jthe normal buildingstructure so that the hood can be Veasilyengaged or disengagedffrom thebuild-` ing'structure by bodily movement of thehood, u sing a novelarrangement for hoodA mounting means. t

- A` further object of 4my. invention isto lprovide a ven tilating hoodconstruction which is removably supported upon an ordinary buildingstructure so that the hood may be removed bodily from its normaloperating position and taken to a place suitable for cleaning andwashingthe hood.f

A-still further object is to support a hood on conventionalV elements of`a building, such as a wall and: shelf or cabinet, in such a way thatrthe hood is easily removablefy'et leaves no unsightly anddust catchingcracks between it and the structure on which it is mounted.` l These andother objects of myinvention havel been ac complis'hed by mounting aVentilating hood directly upon `Patented Feb. 24, 1959 2 elements of thenormal building structure using disengageable fastening means includingelements engaged by a simple movement of the hood. The hood is designedespecially for use in conjunction with a building structure whichordinarily includes a vertical wall and a shelf, a cabinet, or othervlaterally projecting structure which has a downwardly facingundersurface beneath which the hood is located. The building structureoften encloses a Ventilating duct which may belocated within the wall orwithin the cabinet, or partly within each. The hood may have a ventopening in one wall which is maintained in registration with an inletopening in the Ventilating duct; andA accordingly the hood is closelyadjacent at least that one surface of the building structure which hasin it the inlet to the Ventilating duct.

In a preferred embodiment, the hood has at its rear i side a downwardlyfacing surface provided by a downwardly facing shoulder which is adaptedto engage and rest upon an upwardly facing surface on a fixed support inthe form of a ledge formed in or upon the wall or other portion of thebuilding structure. This arrangev ment is adapted to support the rearend of the hood and This fastening Ameans may be a snap-type fastener, a

headed pin and a key hole slot, a slotted pin and wire connecter, or anyothersuitable and conventional type of fastener which comprises elementsthat can be readily engaged and disengaged,preferably by movement of thehood relative to the building structure.

v `When the hood has avent opening in one wall, the. elements of thefastening means are preferably solrelated that the movement whichengages them is that same moven'lentwhich` brings the vent opening ofthe hood into registrationvwith the opening into the Ventilating duct.Hence at the end of the movement placing the hood in position, thefastening means are engaged to support the hood in place and no furtheroperation or action is required. Y

How the Vabove and other objects of my invention are attained will bemore readily understoodby reference to the following description and tothe annexed drawings, in which: t

Fig. 1 `is a side elevation of a preferred form of my inventionin whichthe Ventilating hood is mounted, according to my invention, underneath acabinet, the hood being in normal operating position;

Fig. 2 is an enlarged vertical median section through the hood showingthe means for supporting' the hood in place; A I

Fig. 3 is an enlarged section on line` -Sl of Fig. 2

showing one type of fastening means for the forwardY portion of thehood; ,t `Fig. 4 isV an enlarged vertical section similar to Fig. 2showing a` modied form of myin'vention in whichthe location ofjthe ventinthe hood wall istchanged and different types of fastening means areemployed; l Fig. 5 is an enlarged fragmentary section in the plane ofFig. 4 showing details offastening means;

Fig. 6Y is an enlarged fragmentary section in the plane" of Fig. 4showing a variational form of shoulder meansat the rear of the hood ingreater detail; `and Fig. 'l is a fragmentary section similar Vto Fig. 5showing a variational form of fastening means.

Referring now to the drawings, Ythere is shown in. Figs. `1 to 3 apreferred, bnttypicaL form of my invenfj tion. Generally indicated at 10is a ventilatingwhood Awhich is placed over stove 12 in order to gatherand'con# duct from the room the fumes and cooking vapors which rise.from the stove. As is typical of many residential in-v stallations atthe present time, storage cabinet 14 is placed over the stove in orderto make the maximum use of the space availahleinlthe room. Cabinet 14pro,-4 jects Qutwardly away from al vertical faceV of wall 15 and isusually attachedftc` and supported by the wall. Thus cabinet 14 and wall15. are parts of the conven-J tional building or support structure uponwhich the hood is mounted. Of course it will be realized that cabinet 14is typical of other portions of the building structure to which the hoodmay be attached and Ythat other similar projecting structures, as forexample, a shelf, an over-hanging portion of the wall, and the Vlike maybe used equally well. Hence, the specific type of cabinet illustrated isshown only for purposes of disclosure and without any intention totherebylimit the invention.

In accordance with common practice, a Ventilatingduct 16 is enclosedwithin the cabinet or wall. Duct 16` is vertically extending and thelower end of the duct has a downwardly facing opening, as indicated at17- in Fig'. 2. The duct may be rectangular or round in cross section.The shape or location of the Ventilating duct is not limitative upon thepresent invention; and many different installations are encounteredbecause of differ-ent localized conditions.

The particular hood here shown has two similar side walls 20 and a backwall 21, all of which are of equal height. Walls 20 and 2 1 depend fromand are joined attheir upper edges to topwall 2 2. Front wall 23 hasarelatively short vertical portion that is connected by a slopingportion to top wall 22. Top wall 22 is provided with exhaust opening 25through which vaporspass to reach Ventilating duct 1,6. As shown in Fig.2, exhaustopening 25 is in registration with the open lower end 17 ofthe Ventilating duct, It is preferable, though not necessary, thatopeningy 25 be surrounded by a shallowv collar 26 which is slightlysmaller than openingl 1 7. Collar 26 lits within the duct to direct thegases upwardly into the duct and eliminate leakage between the hood andcabinet.

As is typical of such portions ofthe building structurer as thosebeneath which hood 10 will be usually located, it will be seen that theundersurface of cabinet 14 isv relatively flat and of a substantialarea. Hood 10 has` its top wall 22 flat in order to conform to the shapeo f the, undetsurtace. 0f. cabinet 14, although my invention iS notnecessarily limited. t0.. a hood. with. a dat t0n wall. However, thisShane Qt the hccd is. preferred. in ccnbinaf tion with a shelf,'cabinet,or the like since its top wall then conforms.. in shape t0. the.undersurface cf cabinet 14,k or other element and the hoodwall' may beheld' against the undersurface, ofl thel cabinet, or at least closelyadjacent to it.

At its rear'side, thev Ventilating hood is provided with means forming adownwardlyfacing surface on the hood'. This may b e provided ina numberof different ways, but in Fig. 2 it is shown as formed by doubling apart of the wall of the hood back on itself at the upper eds;` of rearwall 21, as indicated at 2,8. "Ehe underside of. this. fold or shoulder.2.8. in the hood wall. movidas. a.. downwardly facing surface whichprojects outwardlyand rearwardly beycnd that ncttcnf Qt rear wall. 2 1which is immediately beneath the. fAQld.- Thus the under- Surface 0ffold. 2.8 can engage andren upon they upward- 1y-l taeins tcp surface0ffixed. ledge cr.- blccls. 30 which, is attached to, and thereforemaybe conaideredvr as part of wall 15. The top ofblock 3l) isspacedsuciently'below cabinet 14A that-fold 28 may be slid` over ledge 30 andinto position by horizontal movement of the hood and shoulder 28. Thismay be accomplished by moving the hood bodily in a horizontal directionrelative to cabinetv lfiand Wal11.5

The lower portion ofy rear wall 21 is preferably oset rearwardly tobring part at least of the rear wall 2J, into close proximity with theface of building wall 15, when the hood is moved backwards toward thewall as far as it can go. It is obviously desirable that the gap betweenthe hood and the building wall be as small as possible. The offset inthe rear wall can be eliminated in various ways, as by setting block 30into the building wall or by constructions described later.

The shoulder and ledge arrangement at the rear side of the hoodpartially supports the hood; but it is obviously desirable to supportthe hood' also at a position spaced frwardly of the shoulder at 28. Forthis purpose, I prefer to provide some suitable type of disengageablefastening means which is located near the forward face of cabinet 14.

Generally speaking, the fastening means comprises separable elements onthe cabinet and on the hood, the elements being engageable, with eachother to h oldf the hood in place` or disengageableV to allow the hoodto be removed. A simple fastener is indicated at- 32. As seen best inFig. 3, it has as one element a spring-type sheet metal fastener whichis mounted on the bottom of cabinet 14. Top wall 22 of the hood isprovided with the other element in the form of opening 33 of a sizewhich can be forced over the spring fingers of fastener 3 2. The lingersare displaced inwardly as the top wall is passed over them and spreadout afterwards to a diams eter larger than hole 33. to hold the hood inplace, as indicated in full lines in Fig. 3. Not only does fasteningmeans 32 support the hood from the cabinet at this forward position, butit is also adaptedto hold the hood againsthorizontal movement whichwould disengage the shoulder 28 from block 30. More than one snapfastener may be used if desired.

To mount the hood on the building structure, the hood is brought upunderneath the cabinet to a position from which shoulder 28 slides overthe ledge at 30. This may -be done by horizontal bodily movement of thehood toward wall 15. At this time, the hood is spaced from theundersurface of cabinet 14 and is tilted slightly from the horizontal,as indicated by the dot-dash lines in Fig, 2. The rearward movementofthe hood has brought collar 26 opposite duct opening 27 and opening 33in the top wall opposite fastener 32. Now by lifting upwardly on thefront end of the hood, the hood is rotated slightly about shoulder 28and moves from the dotted line position to the full line position inFig. 2. Collar 26 enters opening 17 so that the vent opening 25 inthehood i sin registration with the open end of Ventilatingducty 16'.This same upward movement of' the hood 4relative to the cabinet engagesthe fastening means since opening 33 in the upper wall passes over andengages fastener 32 so that the hood is now supported in place with hoodwalls 22 and 21 against or close to cabinet- 14 and wall 15. Althoughthe movement for mounting the hood has been described as having twodistinct components, it is in practice a single, continuous movement.When mounted in place, the fastening means holds; the hood againstforward sliding movement which would disengage shoulder 28r from theledge on which it rests.

To dismount the hood, the movements just described are reversed. Thehood is moved down, moving the top wall from thev solid line position tothe dot-dash Vposition of- Fig. 3 to disengage elements of the fasteningmeans. Then the hood can be pulled forward to, disengage shoulder 28 andledge 30. The hood is now free to beiaken to any place desired forcleaning or the like.

A variational form of my invention is shown in Figs. 4, 5 and 6 that isespecially suited to a hood constructed inl the same way as before,except that vent 35 is located in the rear wall of the hood instead ofin the top since duct 16a is in wall 15 and has an inlet 17a in the faceof the wall. Also, the upstandingflange around the vent is omitted and aseal between vent 35 andthe inlet .to the surrounds vent 35 on theoutside of the hood and llS a the space between the hood and wall 15.; yY p 1 The downwardly facing surface on the hood is proyidedby one ormore pins38mol1ntedgon the =back wall and `extending rearwardlytherefrom. There are preferably two such pins horizontally spaced apartand, placed near the corners of the hood. Only one pin is Yshown anddescribed since both Varenalike. AThe upwardly facing surface uponwhichn pin 3 8 rests, is provided within rbuilding wall and Vis formedby a sleeve 39 receiving pin 38. There are two such sleeves, one foreach pin 38, spaced the same distance apart as pins 3S. Sleeves 39 aretypical of means that may be provided in the wall for locallyreinforcing the plaster or similar facing on the wall to receive thewear and the load imposed by pins 38. It will be evident without furtherillustration that these parts may be reversed, i. e., the pin may beattached to the wall and enter a hole in the rear wall of the hood; butthe same general relationship of engaging surfaces is maintained.

In this form of my invention, the fastening means includes an element oncabinet 14 in the form of a wood screw 40 or a similar member located onthe undersurface of the cabinet. The complementary member on the hoodengaging screw 40 is key-hole opening 42 in the top wall of the hood.Opening 42 is provided with an enlarged end 42a which is large enough topass over the head of screw 40 and which is connected to a narrowelongated portion 42h of a size .to receive only the shank of the screw.

To mount the hood in place on the wall, the hood may 'be lifted upunderneath the cabinet and the head of each screw 40 is inserted intothe large end of the associated opening 42. In this position, each pin38 is horizon tally opposite a sleeve 39 in the wall. Bodily horizontalmovement of the hood relative to cabinet and wall causes the pins toslide into the sleeves and rest upon an upwardly facing surface in thesleeve, and at the same time screws 40 engage the narrow ends of slots42 for the purpose of supporting the hood at a position near the forwardface of cabinet 14.

Since the fastening means does not restrain the hood against horizontalmovement in a direction to disengage pins 38 from sleeves 39, separatemeans for so resning the hood is provided. Although other similardevices may be used, the means here shown comprises an upwardlyextending pin 44 mounted on the free end of leaf spring 45 whichnormally causes the pin to project upwardly above the top `surface ofthe hood wall. The pin is depressed by engagement with the undersurfaceof cabinet wall when the hood is moved into position, but when the hoodreaches the proper position as shown in Fig. 4, .the spring pushes pin44 upwardly into bore 46 in the cabinet. Engagement'of the pin with thebore in the cabinet prevents the hood from being moved horizontally awayfrom wall 15. When it is desired to dismount the hood, spring 46 isdepressed to the dot-dash position of Fig. 5, disengaging pin 44 fromEbore 46. The hood may now be pulled to the left, freeing it from themounting means at both the front and back of the hood.

The above description indicates, without the need of additionalillustration, that various changes may 'be made, within the scope of myinvention, in the shape or location of the hood. For example: the rearwall of the hood may be so greatly reduced in vertical dimen'siomor thehood raised relative to inlet 17a, that duct inlet 17a is actually belowthe lower edge ofthe rear wall of the hood. Likewise, pins 38 may berelocated at any position lower down on the hood rear wall.

Although it is preferred to use fastening means which have elements onthe cabinet or other portions of the building structure, andoii the"hood which can be engaged by movement of the hood as a whole, there mayarise installations wherein fastening means of this character areanotpractical. Therefore there is shown in Fig. 7 another type of fasteningmeans which is adapted to be separately manipulated afterthe hood hasbeen moved substantially into its nal operating position. This type offastening means comprises. a short wire or rod 50 mounted on the cabinetby means of screws 51. On the hood there is a slotted pin 53 whichis.'rotatably mounted in the top wall of the hood and is provided on itslower end with wings 54 by means of which the pin may be manuallyrotated. The upper end of the pin is provided with a transversediametral slot 55 having a spiral configuration with its axis coincidentwith the axis of pin 53. To engage these two elements of the fasteningmeans, slot 55 is aligned lengthwise with wire 50 and then the pin ispushed upwardly to engage the wire in the slot. At the same time, thepin is rotated by grasping wings 54 causing the pin to move upwardly`and seat the wire in the lower end of the slot. This action draws thetop wall of the hood tightly up against the undersurface of the cabinet.This type of fastening means is quickly released by turning pin 53 inthe reverse direction, the weight of the hood causing it to drop anddisengage wire 50. This type of fastening means at the forward portionof the hood may be combined with either of the downwardly facingshoulder constructions described.

From the foregoing, it will be understood thatvarious changes in thedesign and arrangement of the elements of my improved hood constructionmay occur to persons skilled in the art without departing from thespirit and scope of my invention. Accordingly, it is to be understoodthat the foregoing description is considered as being illustrative of,rather than limitative upon, the appended claims.

I claim:

1. A Ventilating hood construction for use in conjunction with abuilding structure provided with an outlet duct, comprising a hoodhaving a relatively at top wall, side panels and a substantiallyvertical rear wall, said top wall including an inclined front portion,one of said walls having means providing an opening for matingengagement with said duct, fastening means on a vertical surface of ajuxtaposed building structure for detachably supporting said rear wallin relation to said juxtaposed portion of said building structure, andsaid top wall being provided with an aperture for the reception of ascrew for securing the top wall in juxtaposition to a relatively forwardopposed portion of said building structure.

2. A Ventilating hood construction for use in conjunction with kitchencabinet construction provided with an outlet duct, comprising a hoodhaving a relatively flat top wall, side panels and a substantiallyvertical rear panel, said top wall'including an inclined front portion,said top wall having at least one aperture complemental to said outletduct, said rear panel being arranged to intersect said top wall at apoint within the plane of the rear panel, the top portion of the rearpanel being bent forwardly to provide a reentrant bend and a horizontal,rearwardly offstanding flange, a setting block forming a shelf for saidflange secured to a structural surface adjacent to said rear panel andscrew supporting means positioned between the outlet duct and the pointof intersection between the top wall and said inclined front portion.

3. A Ventilating hood construction for use inlconjunction with kitchencabinet construction provided with an outlet duct, comprising a hoodhaving a relatively at top wall, side panels and a substantiallyvertical rear panel,

` said top wall including an inclined front portion, said rear panelhaving at least one aperture complemental to said outlet duct, said rearpanel intersecting said top wall` einem et, auhstantially right. angleayrearwardly projeetng pins, -Beierelleee Cited in the le of this patentveeeured t0 said rear panel, cpmplemental' Snrporting UNITED STATESPATENTS sreeyes adapted 1o receive. saidp'ins carried by Str-11 1174 851fslekleffrtV 111.y Mar. 7 1916 rural surface adjacent te, Sai@ rearPanel, Screw means 1'776991 nier/1e sept. 3o' 1930 carried. by andprojeetinedewnwardly from said eabinee 5 Y1f969f5155 'Klmme L Aug. 719'3'4 e key hole Qpenng in said top wall c ernnlememal to s aid2,464,473 -vfesse'l Maf.' 15, 1949 screw means. te. permit limitedhorizontal sliding move 2,487,697 s01mgag1 Nov. 8, 1949 ment, andpivoted latch means on said top wall adjacent 2,528,844 RQbertsQn Nov.7, 1950 to. said screw means to prevent inadvertent movement of m2,553,86'6 Olson May 22, 1951 said hood. 2,750,867 Meyer June 19, 19,56

